Device for preventing boiling over of milk



Nov. 25, 1930. E. FRIED 1,782,417

DEVICE FOR PREVENTING BOILING OVER OF MILK Filed Jan. 20, 1930 I; BY r IATTQRNE 25 With these and other objects in view,

Patented Nev. 25, 1930 EUGENE FRIED, ornnwn x,

nnvicnron PREVENTING termite dvsaiptgmt Application filed Ja nuary 20, L

The presentinvention relates to a culinary utensil, and moreparticularly to aldevicc for preventing boiling over of milk or similarfluids. 1 5 y The devices heretofore inusefor the purpose statedlarepart of the milk boiler or of i the cover thereof, andareobjectionablefor the'reason that they arediificult to clean. The main object of thepresent invention is to provide a device which is adapted tobe placedinto a milk boiler, it being'in :the

'1 y form ofa diskmadeof non-corroding material,for instance porcelainorthe like, and so constructed thatit may be readily. washed in themanner of an ordinary dish, thereby.

overcoming the difliculties above referred to. Another obj ectof theinvention is to provide a contrivance of the character mentioned whichis simple'in'construction, effii clent in operation, durable In use andcapable of manufacture'on a commercial scale,

or in other words one which is not so dif-' ficult to produce as to bebeyondthereasonable cost of sucha utensil.

which willmore fullyappear as the nature of the invention is betterunderstood, the same consists in the combination, arrangement andconstruction of parts hereinafter described, pointed out in theappendedclaim and illustrated in the accompanying drawings, it beingunderstood; that. many changes may be made in the size andproportion ofthe severalparts and details of construction within the scope of theappended sacrificing any of the advantages o-f the invention. i a One ofthemany possible embodiments of I 40 the invention is illustrated in theaccom panvmg drawings, in which V Figurel is a top plan view of a deviceconstructed in accordance with the present invention; and F ig.'2 is asection taken on line 2-2 of Fig. 1.

In the drawings the numeral 10 indicates a disk made of a suitablenon-corroding' material, such as porcelain or glass,

adapted'to withstand changes of temperature withoutcracking. This diskis dished claim, without departing from the spirit or periphery of thedisk, is gradually decreased r l'l e ff j or concavedii n itscupper a ndlower faces, as; i indicated at ll'an'd 12, respectively; it being"provlded with'arather heavy peripheral. rim 1 13 on its upper and lowerfaces, eitlier one of which is adaptedto' rest on 'theinner sur- 5;);

face of the bottonriof a milk boiler: The I faces 14 of the rims wliic-hare in the planes. of the upper and lower facesof the/disk, are flat soasto contact iwith the vessel bee tom over i an. extended areaincorderto make a substantially air-tight closure 1 of there spectiveiconcavityinthe disk, 1 when l the latr ter rests"onaivessel bottom. In the face"14a of each rim; is: provided a= circuitous: groove 15, leading fromitherespective concavity in the diskto the periphery ofathe latter.- The,width and depth of? each "groove gradually increase from thellirespective flconcavity .to thetperipheryl ofthedisk, for a purposehere inafter to be described. i i

In use, the disk is placed into .a vessel or boiler, resting with one ofits fiat faces on the said bottom. In this manner the lower concavity inthe disk is closed but communicates through the respectivegroove 15 withthe interior of the boiler. The diameter of the disk should be smallerthan that of the boiler, so that the outlet of the groove of, the closedconcavity is uncovered. The milk or other fluid to be boiled, is pouredinto the vessel and 8.0.

finds its way into the closed concavity in the disk. 1 As the vessel isnow placed upon the fire and the milk therein heated, the gaseousbubbles within the closed concavity of the disk are prevented fromrising suddenly, they'being caused to flow through the groove incommunication with the closed concavity into the liquid outside of thesaid concavity,

rising slowly whereby boiling over of the milk is prevented. The disk iskept on the W vessel bottom by its own weight, it being heavy enough toovercome the pressure created by the gaseous bubbles Within the closedconcavity. Asmentioned above,the width and depth of each groove 15increasegradual 1y from therespective concavity to the periphery of thedisk. Due to thisconstruction, the speed ofthe gaseous bubbles, as theypass from the closed concavity toward the i so that the said bubbleshave less tendency to rise suddenly toward the surface of the milk orother fluid.

The device being made of porcelain or glass, as above stated, and theconcavities and grooves therein being exposed, the contrivance may beeasily cleaned, after use, in the manner of an ordinary dish.

It is obvious that, while herein the device has been shown and describedas having in both faces thereof a concavity, a disk with a concavity inone of its faces only may be used without departing from the invention.It is obvious, however, that a disk having a concavity in each facethereof is more convenient because no attention need be paid to themanner in which the disk is placed into a vessel when being put to use.

What I claim is A device for preventing boiling over of milk comprisinga disk provided with a concavity in one of its faces having a peripheralrim on said face of substantial Width, said rim having a flat faceadapted to contact with a vessel bottom, said rim being provided in itsflat face with a circuitous groove leading from said concavity to thedisk periphery, said groove increasing gradually in width and depth fromsaid concavity to the disk periphery.

Signed at New York city, in the county of New York and State of NewYork, this 18th day of October A. D. 1929.

a V I EUGENE FRIED.

